Sharp 29F-PS370, Руководство по обслуживанию

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29F-PS370
NO NORMAL SOUND
Set volume to maximum. Is there
any sound output signal at pin 8 &
12 of IC301?
No sound from the
speaker. No sound
comes out at
AV-out J905.
Check if there is
sound input signal
at pin 2 & 4 of
IC301.
NO YES
Check connection
to the speaker.
Check sound output
signal from pin 23 &
24 of IC1100 and its
related circuit.
Check input signal
at pin 13, 14 of
IC3801 and its
related circuit.
Check output
signal at pin 25,
26 of IC1100 and
its related circuit.
NO
NO
Check IC301 & its
surrounding circuit.
YES
Check IC3801 &
its surrounding
circuit.
YES
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